632
FXUS65 KBYZ 120658
AFDBYZ
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
1258 AM MDT FRI JUN 12 2026
KEY MESSAGES
- COLD FRONT THIS EVENING USHERS IN A COOLER AND WETTER SATURDAY.
- WARMING AND MOSTLY DRY CONDITIONS SUNDAY INTO TUESDAY.
DISCUSSION
TODAY THROUGH THURSDAY...
WEST TO NORTHWEST FLOW AND WEAK TROUGHING ACROSS MUCH OF THE
NORTHERN PLAINS CONTINUES TODAY, BRINGING WIND GUSTS IN THE 15 TO
30 MPH RANGE. LOOK FOR DRIER CONDITIONS FOR MUCH OF TODAY ALONG
WITH TEMPERATURES IN THE 70SF.
A WEAK WAVE LOOKS TO SWING AROUND THE BACKSIDE OF THE PERSISTENT
LOW OVER ONTARIO LATE THIS AFTERNOON/EVENING. THIS WILL BRING A
COLD FRONT AND ANOTHER ROUND OF SHOWERS ESPECIALLY TO THE
MOUNTAINS/FOOTHILLS OF SOUTHERN MT AND NORTHERN WYOMING. UPSLOPE
FLOW INTO THE BEARTOOTH AND BIGHORN FOOTHILLS (INCLUDING RED LODGE
AND SHERIDAN), AND THEIR RESPECTIVE MOUNTAINS LOOKS SUFFICIENT
FOR INCREASED RAINFALL. THE LATEST FORECAST HAS A MODERATE TO HIGH
CHANCE FOR AT LEAST 0.5 TO 0.75" OF PRECIPITATION TONIGHT THROUGH
SATURDAY. INSTABILITY LOOKS TO BE QUITE MINIMAL SO THUNDERSTORMS
ARE LESS LIKELY, THOUGH A FEW RUMBLES OF THUNDER CANNOT BE RULED
OUT ACROSS THE AREA. THERE IS CURRENTLY A MODERATE CHANCE OF
PRECIPITATION ACROSS THE PLAINS, THOUGH AMOUNTS SHOULD QUICKLY
DECREASE THE FURTHER AWAY FROM THE MOUNTAINS/FOOTHILLS YOU ARE.
COOLER TEMPERATURES WILL ACCOMPANY THE FRONT WITH HIGHS IN THE 50S
AND 60S. SNOW LEVELS ARE FORECAST TO DROP AS LOW AS 8,500 FEET.
LIGHT SNOW ACCUMULATIONS ARE POSSIBLE FOR THE BEARTOOTH HIGHWAY
MAINLY ABOVE VISTA POINT AS WELL AS THE HIGHER ELEVATIONS OF US-14
THROUGH THE BIGHORNS. IMPACTS TO RECREATION IN THE HIGH COUNTRY
AND TRAVEL ALONG THOSE HIGHWAYS MAY BE IMPACTED, PREPARE FOR
COOLER AND WETTER CONDITIONS IF YOU HAVE PLANS THIS WEEKEND.
ENSEMBLES GENERALLY DEPICT DRIER NORTHWEST FLOW WITH OCCASIONAL
PIECES OF ENERGY BRINGING ISOLATED SHOWER AND WEAK THUNDERSTORM
ACTIVITY TO THE REGION IN THE AFTERNOONS/EVENINGS SUNDAY INTO
TUESDAY. THE THREAT FOR STRONG TO SEVERE THUNDERSTORMS DURING THIS
TIMEFRAME IS VERY LOW. BY LATE TUESDAY INTO WEDNESDAY, A MORE
ACTIVE WAVE IS POSSIBLE WITH ENSEMBLES DEPICTING ENERGY MOVING
THROUGH AS THE STUBBORN ONTARIO LOW REMAINS THE KEY PATTERN
INFLUENCE.
THE LATEST FORECAST HAS HIGH TEMPERATURES IN THE 70S SUNDAY AND
MONDAY AND POTENTIALLY BACK INTO THE 80S BY TUESDAY.
MATOS
AVIATION
VFR CONDITIONS WILL PREVAIL THROUGH TODAY. WIND GUSTS INCREASE
WITH AROUND 17-19Z WITH GUSTS IN THE 20 TO 30 KTS OUT OF THE
WEST-NORTHWEST. ISOLATED CONVECTION (MAINLY SHOWERS) DEVELOPS
OVER MUCH OF THE AREA AFTER 21Z, WITH LOW PROBABILITIES FOR MVFR
OR LOWER VISIBILITIES WITH HEAVIER PRECIPITATION AREAS. BT
PRELIMINARY POINT TEMP/POPS
TDY SAT SUN MON TUE WED THU
-------------------------------------------------------
BIL 077 049/064 043/071 047/078 054/086 058/079 051/079
0/B 62/W 00/U 00/B 00/N 23/T 22/T
LVM 074 041/061 037/070 041/076 047/084 050/078 043/077
0/U 56/W 10/U 00/U 00/N 11/N 11/U
HDN 077 047/065 040/071 043/077 050/084 054/077 048/077
0/U 61/E 00/U 00/B 00/N 33/T 12/T
MLS 074 048/064 043/072 047/075 050/081 055/074 049/075
0/U 10/B 00/U 00/B 02/W 34/W 22/W
4BQ 075 048/062 041/069 046/073 050/080 055/074 049/075
0/U 52/W 00/U 00/B 01/B 33/T 12/W
BHK 073 043/062 039/070 044/072 045/076 051/071 046/073
0/U 00/N 00/U 01/B 12/T 45/T 22/W
SHR 075 042/059 036/065 039/072 044/080 050/075 044/075
0/U 99/W 11/B 00/N 00/B 13/T 12/T
BYZ WATCHES/WARNINGS/ADVISORIES
MT...NONE.
WY...NONE.
WEATHER.GOV/BILLINGS
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